The way US health care functions is an argument that the nation's principles (all free capitalism and no public intervention) are problematic.
If I were POTUS for a season, I would make a volcanic erruption in the health system. If I needed to care an elder without insurance, I would pay out of pocket a willing friend or even a homeless and not proceed to euthanasia as a commenter suggested.
As for me, when it is my turn, I plan to do "home attendant services". My understanding is that Medicare will pay, after a doctor has declared I am home bound, medical services at my home. I will have to arrange for meals, bathing, etc. out of my own pocket. When that time comes, I hope to find people at my church who are willing to do this. When it comes close to my time, I would need the doctor to say I need "at home hospice". Then an attendant will stay with me 24 hours a day and give me painkillers etc. until I pass in my own home.